I am trying to help a friend with a problem on his 1981 500SEL(grey market car). I beleive it is just the rear windows that do not work. He said he tryed the operating switch and nothing happened but when inducing power directley to the regulator motor they work great! Is there a relay in there somewhere?
thanks for your help

"It cannot be emphasized too strongly or too often that this great nation was founded not by religionists, but by Christians; not on religion, but on the Gospel of Jesus Christ. For that reason alone, people of other faiths have been afforded freedom of worship here." Patrick Henry 1776